%{
#include <iostream>
#include <string>
#include <unordered_map>
using namespace std;
 
unordered_map<string, int> symbol_table;
int location_counter = 0;
%}
 
%%
^START[ \t]+[0-9]+      { location_counter = atoi(yytext + 5); }
^[A-Za-z][A-Za-z0-9]*:[ \t]*DS[ \t]+[0-9]+   { symbol_table[string(yytext, yyleng - 4)] = location_counter; }
^[A-Za-z][A-Za-z0-9]*:[ \t]*                { symbol_table[string(yytext, yyleng - 1)] = location_counter; }
.*                                         { if (strcmp(yytext, "END") != 0) location_counter++; }
%%
 
int main(int argc, char** argv) {
    // Run the lexer on the input
    yylex();
 
    // Output the final symbol table
    cout << "Symbol Table:" << endl;
    for (const auto& pair : symbol_table) {
        cout << pair.first << "\t" << pair.second << endl;
    }
 
    return 0;
}
 
int yywrap() {
    return 1;
}
 

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